Buick Workshop Service and Repair Manuals > Skyhawk L4-121 2.0L Turbo VIN M FI (1987) > Relays and Modules | Relays and Modules - Powertrain Management | Relays and Modules - Computers and Control Systems | Engine Control Module | Component Information | Testing and Inspection | Component Tests and General Diagnostics

Component Tests and General Diagnostics|Page 92 > < Acceleration Mode|Page 89

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Engine Control Module: Component Tests and General Diagnostics

Chart C-1 ECM Quad Driver (QDR) Check

Chart C-1 ECM Quad Driver Check

Relays and Modules
Relays and Modules - Powertrain Management / Relays and Modules - Computers and Control Systems / Engine Control Module / Component Information
Testing and Inspection
Component Tests and General Diagnostics

Component Tests and General Diagnostics|Page 92 > < Acceleration Mode|Page 89